In America, we've become accustomed to a great variety of food from around the world. While that's great for a treat, eating it as a matter of course takes the pleasure from it and adds a lot to the food bill.
It used to be that eating locally was the normal thing. People didn't have cranberry sauce in areas where cranberries didn't grow, except for holiday meals. Olives were the same... only at special meals.
At home we seldom had dessert except for Thanksgiving, Christmas and Easter and when we did, it was gooseberry pie or chokecherry jelly on toast. On very rare occasion we'd have ice cream or cookies - never both.
We had candy once a month, when Mom bought groceries; soft drinks were the same. Mom was a good cook and we ate a variety of food, but much of it was homegrown. Of course at the time, deer were plentiful and my brothers liked to hunt so we had good meat, too.
Is eating locally healthier? Probably so. Is it cheaper? Definitely. Frugal living looks at every aspect of every part of living. Look at your total food bill... and see if eating a little closer to home will decrease it.